Responses will probably be few and far between as this isn't facebook or instagram with people looking for attention, and no sane person wants anything to do with encouraging more people to hunt "their" unit.
Google North American elk bull pics, that’ll give you a good representation, seriously there isn’t a set size. But being your first hunt, shoot the first legal bull you see as it’ll probably be the only one. Be ready to accept you may not even see one, just a fact of elk hunting especially your first time.